Substitute for shellac and the like



. '10 The inventionfurther consists in the new Anexample of a method ofproducing a 65 v shell oil or of causing reactions thereof are oil whichcomprises heating it at temperature 110 Patented Aug. 27,1929. 1,725,193

UNITED STATES PATENT-OFFICE. I

MORTIME R T. HARVEY, OF NEW YORK, N. Y., ASSIGNOR, 3Y DIRECT AND MESNEAS SIGNMENTS, TO THE HARVEL CQRPOBATION, A. CORPORATION OF NEW JERSEY.

SUBSTITUTE FOR SHELLAC AND 'IYHEv LIKE. No Drawing. Application filedJune 8, 1926. Serial Ilo. 114,554.

The present invention relates to comcopper, aluminum, lead, and oxides,hydroxpositions of matter and method of obtainides or carbonates ofthese or other metals. ing them which are derived from the oil Apossible explanation of the change in the found in the shell of thecashew nut. The oil is that hydroxyl groups therein are partly 5compositions or products are useful=as subor completely destroyed eitherin polymerizastitutes for varnishes, lacquers and the like, tion,cracking, oxidation reactions, replaceas electrical insulation material,waterproof ment of the hydrogen atom with a'mctal atom ing, paper andcardboard finishing, as ceor some group, or through some otherreacments, and are useful in the arts generally. tion.

and novel features of operation and the new useful product according tothe invention folandioriginal arrangements and combinations lows. Nineparts of cashew shell oil by A of steps in the process hereinafterdescribed weight and one part of cupric carbonate are and moreparticularly set forth in the claims, heated for about one hour at atemperature 15 The invention also consists in forming a of about 140degrees centigrade at atmosproduct having the general characteristics,pheric pressure with the result that the hyv the new and usefulapplications, and the sevdroxyl groups are substantially completely eraloriginal features of utility hereinafter freacted with and the producthas a substans t forth and claim d, tially neutral reaction. Theproduct, which 20 According to the invention the oil which re- 1s aliquid, is separated from remaining cop: curs naturally in the cellularshell or coverper carbonate or other resid ls and made ing of the cashewnut istreated to produce into a varnish or lacquer-by df ssolving with acomposition of matter which is highly usebenzol, naptha, alcohol or thelike and apful in the arts generally and particularly forplied to paperor fabric, and dried thereon 25 electrical insulation capable ofwithstandt0 P O Q an elec rically insulating Coating ing increasedtemperatures, for impregnatmaterial for wire coils and the like or ising paper and the like for making packages applied directly to wire andbaked or otherwhich are impervious to moisture, odors, for Wise driedthereon. coating bottle corks and stopper, andso 0n.- It is to beunderstood that cashew shell nut 30 This oil, which hereinafter isreferred'to as oil has been determined to be composed of cashew shelloil, in the natural state hasa cardol and anacardic acid and that theclaims very high iodine member, about 290, but hereof which recite theuse of cashew shell oil it does not oxidize readily, and will stand areintended to cover equivalent use of these for an indefinite time in airwithout apprematerials from whatever their source 35 ciable change ofits'iodine Value, and with- Whether natural or artificial. out drying oroxidizing. ,On the other hand Although I have set forth and described Ihave found that by reacting it with a metal one process for producing myimproved prod or an oxygen bearing metal compound that not, it isobvious that various changes may compositions or products 1 areobtainable be made in the process or in the separate steps 40 which arehighly stable, resistive to chemical thereof Without modifying orchanging the action of dilute and concentrated acids such essentialfeatures and characteristics of the as nitric, or sulphuric orhydrochloric and products produced and that such products to alkalis,which when applied with a veremain substantially with the same desirablehicle such as naphtha, ben'zol or the like will characteristics althoughslight modifications 45 dry quickly and adhere tenaciously to form maybe made in the appearance, texture and a hard and highly flexible film,which are in physical and chemical characteristics. resistant to heat,and which have other highly I claim:

desirable characteristics. 'It is notyet known 1. The reaction productof cashew nut whether the reactions accomplished are pershell oil andcupric carbonate. v

5 manent reactions between the oil and the met- 2. The reaction productof cashew nut all product, whether they are entirely c'atalytshell oil,nine parts by weight and about one ic, or whether they are in part both.part of cupric carbonate heated for about one Examples of metals andmetal compounds hour at about degrees centigrade. which are capable ofreacting with the cashew 3. The method of treating cashew nut shell upto about 140 ing agent.

4. The method of treating cashew nut shell oil which comprises heatingit at temperature up to about 140 C. with a drying agent which comprisesan oxygen bearing metal compound.

5. The method of treating cashew nut shell oil which comprises heatingit at temperature up to about 140 C. with copper carbonate.

6. The method of treating cashew' nut shell oil which comprises heatingit up to about 140 C. with cupric carbonate and then separating theresulting compound from any residue.

7. An oil which will dry to form a dry and flexible film havingelectrical insulating properties and which is infusible by heat, formedby heating cashew nut shell oil with cupric carbonate.

8. The method of converting cashew nut shell oil into a drying oil whlchcomprises C. with a metalliferous dryheating cashew nut shell oil in thepresence of a drying agent comprising an oxygen bearing metal compound.

9. A liquid which will dry and which is obtained by heating cashew nutshell oil in contact with a metalliferous drying agent.

10. A liquid which will dry and which is obtained by heating cashew nutshell oil in contact with an oxygen containing metalliferous dryingagent.

11. A composition of matter obtained by heating cashew nut shell oil incontact with an oxygen containing nietalliferous drying agent.

- 12. In the manufacture of coating, impregnations and moldedcompositions, the method which comprises heating cashew nut shell oil incontact with an oxygen containing metalliferous drying agent.

In testimony whereof I have hereunto set my hand and seal.

MORTIMER T. HARVEY.

